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Finding the Fourth Proportional to 662,691.40, 994,037.10 and 618,076.60

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Solution

The fourth proportional to 662,691.40, 994,037.10 and 618,076.60 is: 927,114.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,691.40 : 994,037.10 = 618,076.60 : x
  2. Step 2: Convert to fraction form
    662,691.40/994,037.10 = 618,076.60/x
  3. Step 3: Cross multiply
    662,691.40x = 994,037.10 × 618,076.60
  4. Step 4: Simplify right side
    662,691.40x = 614,391,071,041.86
  5. Step 5: Solve for x
    x = 614,391,071,041.86/662,691.40
  6. Step 6: Final answer
    x = 927,114.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.